MX-FNX9 SELF DIAGNOSTICS AND TROUBLE CODES 9 – 1
MX-FNX9
Service Manual
[9] SELF DIAGNOSTICS AND
TROUBLE CODES
1. Trouble code and troubleshooting
A. MX-FNX9
Phenomenon
Though the main switch of the main unit is turned ON, the
inner finisher does not operate. Trouble code: F1-00
Case 1
Cause
Connection failure with the main unit.
Check &
Remedy
Check to confirm the connection state of the
connectors.
Case 2
Cause
Connection failure of the connector contact pin
(interface harness) with the main unit.
Check &
Remedy
Check to confirm the conduction state of the
connectors. If there is no conduction, replace
the connection wire.
Case 3
Cause
Front cover switch (FDSW) trouble
Check &
Remedy
Check to confirm the conduction state of the
connectors. If there is no conduction, replace
the connection wire.
Case 4
Cause
Control PWB trouble
Check &
Remedy
After checking the above 1 to 3, if DC24V and
DV5V are not supplied from the main unit and
if 24V is not supplied to TP14 and 5V is not
supplied to TP17, replace the control PWB.
Phenomenon
The transport motor (FRM) does not operate.
The bundle exit motor (FAM) does not operate.
Case 1
Cause
Motor connector pin contact failure
Check &
Remedy
Check the connection state of the connector.
(CN14)
Case 2
Cause
Motor coil disconnection
Check &
Remedy
Perform the conduction test of the coil. If there
is no conduction, replace the motor.
Case 3
Cause
Control PWB trouble
Check &
Remedy
If the motor does not operate in the motor
single operation mode, replace the control
PWB.
Phenomenon
Roller up/down motor (FSWM) does not operate. Trouble
code: F1-03
Case 1
Cause
Roller up/down sensor (FRLD) trouble
Check &
Remedy
Measure the voltage of TP12 on the control
PWB to confirm that it is 5V
±
5% when the
paper exit roller descends, and 1V or less
when the paper exit roller rises. If the voltage
does not satisfy the said condition, replace the
sensor.
Case 2
Cause
Motor coil disconnection
Check &
Remedy
Perform the conduction test of the coil. If there
is no conduction, replace the motor.
Case 3
Cause
Control PWB trouble
Check &
Remedy
After checking the above 1 and 2, if the
phenomenon is not removed though the
sensor level is changed and if the motor does
not operate in the motor single operation
mode, replace the control PWB.
Phenomenon
The alignment motor F (FFJM) does not operate.
Trouble code: F1-19
The alignment motor R (FRJM) does not operate.
Trouble code: F1-20
Case 1
Cause
Alignment plate HP sensor F (FFJHPD)
trouble
Check &
Remedy
Measure the voltage of TP9 on the control
PWB to confirm that it is 5V
±
5% when the
alignment plate is pushing against the center
portion, and is 1V or less when the alignment
plate is pushing against the front side (home
position). If the voltage does not satisfy the
above condition, replace the sensor.
Case 2
Cause
Alignment plate HP sensor R (FRJHPD)
trouble
Check &
Remedy
Measure the voltage of TP10 on the control
PWB to confirm that it is 5V
±
5% when the
alignment plate is pushing against the center
portion, and is 1V or less when the alignment
plate is pushing against the rear side (home
position). If the voltage does not satisfy the
above condition, replace the sensor.
Case 3
Cause
Motor coil disconnection
Check &
Remedy
Perform the conduction test of the coil. If there
is no conduction, replace the coil.
Case 4
Cause
Control PWB trouble
Check &
Remedy
After checking the above 1 to 3, if the
phenomenon is not removed though the
sensor level is changed and if the motor does
not operated in the motor single operation
mode, replace the control PWB.
Phenomenon
A paper jam error is displayed on the system display.
Case 1
Cause
Paper jam
Check &
Remedy
Visually check and remove the paper jam
Case 2
Cause
Inlet port sensor (FED) trouble
Check &
Remedy
Measure the voltage of TP11 on the control
PWB to confirm that it is 1V or less when
paper is empty, and is 5V
±
5% when paper is
provided. If the voltage does not satisfy the
above condition, replace the sensor.
Case 3
Cause
Empty sensor (FSTPD) trouble
Check &
Remedy
Measure the voltage of TP8 on the control
PWB to confirm that it is 1V or less when
paper is empty, and is 5V
±
5% when paper is
provided. If the voltage does not satisfy the
above condition, replace the sensor.
Case 4
Cause
Control PWB trouble
Check &
Remedy
If the phenomenon is not removed though the
sensor level is changed by turning ON/OFF
each sensor, replace the control PWB.
Phenomenon
A document is not detected.
Case 1
Cause
Tray paper empty sensor (FBED) trouble
Check &
Remedy
Measure the voltage of TP4 on the control
PWB to confirm that it is 5V
±
5% when paper is
empty, and is 1V or less when paper is
provided. If the voltage does not satisfy the
above condition, replace the sensor.
Case 2
Cause
Control PWB trouble
Check &
Remedy
If the phenomenon is not removed though the
sensor level is changed by turning ON/OFF
each sensor, replace the control PWB.